Answer:
Surpnakha
Step-by-step explanation:
Surpnaka , sister of Ravan describes the beauty of Sita to Ravan .
Reason for that :-
Surpnaka was a demon , sister of Ravan. Once when she was roaming in the jungle she saw Laxman , brother of Shri Ram . She wanted to marry with either of the brothers but both of them denied since both of them were already married . In rage she attacked at Sita , wife of Shri Ram . To protect her , Laxman attacked on her cutting her nose . In order to take revenge she told beauty of Godess Sita to Ravan ( King of Shri Lanka ) so that he would attack on them .